Structural and morphological modifications of a nanosized 62 atom percent Sn-Ni thin film anode during reaction with lithium
Structural and morphological modifications of a nanosized 62 atom percent Sn-Ni thin film anode during reaction with lithium
复制标题
DOI：
10.1149/1.1856913
复制
发表时间：
2005-03
影响因子：
3.9
通讯作者：
H. Mukaibo;T. Momma;M. Mohamedi;T. Osaka
中科院分区：
文献类型：
--
作者：
H. Mukaibo;T. Momma;M. Mohamedi;T. Osaka
存在开发和表征用作提供高于碳的容量的负极的非碳质材料的强烈动机。1994年，富士胶片公司，有限公司、为Sn氧化物申请了专利，作为锂离子电池的新型负极材料，其理论容量超过碳。然而，氧化锡材料在第一次循环期间显示出高的不可逆容量，这妨碍了其作为锂离子二次电池中的阳极的商业成功。大的不可逆容量是由在第一次循环期间锡氧化物的还原和锂氧化物的形成引起的。2尽管如此，对氧化锡材料的研究证明了锡基负极材料的可能性能。为了减轻与锡氧化物相关的不可逆容量，已经进行了几次尝试来开发具有高容量和长循环寿命的非氧化物锡材料。3-26从这些研究中可以看出，选择能够适应循环期间锡的体积变化的适当基质对于能够提供高容量和长循环寿命的成功锡阳极化合物至关重要。假设对锂不活泼的元素有效地抑制体积变化，而没有明显的不可逆容量。基于这一假设，研究了Sn与Fe，15-19 Cu，20-23 Mn，19，24和Co，19的合金化。镍是一种典型的元素，其不与锂反应，并且可以预期用作用于改善电极的循环能力的适当基质，而没有高的初始不可逆容量。Sn-Ni合金预处理工艺的研究
.There is a strong incentive to develop and characterize noncarbonaceous materials for use as negative electrodes that deliver capacities higher than carbon. In 1994, Fuji Film Co., Ltd., filed a patent for Sn oxides as a novel anode material for lithium ion batteries with a theoretical capacity exceeding that of carbon. 1 However, the tin oxide material showed high irreversible capacity during the first cycle, which has precluded its commercial success as an anode in lithium ion secondary batteries. The large irreversible capacity is caused by the reduction of the tin oxides and the formation of lithium oxide during the first cycle. 2 Nonetheless, the studies on tin oxide material demonstrated the possible performance given a tin-based negative electrode material. To mitigate the irreversible capacity associated with tin oxides, several attempts have been made to develop nonoxide tin materials with both high capacity and long cycle life. 3-26 From these studies, it may be seen that the selection of an adequate matrix that can accommodate the volume change of tin during cycling is crucial to a successful tin anode compound that can deliver both high capacity and long cycle life. Elements that are inactive against lithium are assumed to suppress the volume change effectively without appreciable irreversible capacity. Alloying Sn with elements such as Fe, 15-19 Cu, 20-23 Mn, 19,24 and Co, 19 has been investigated based on this assumption. Nickel is a typical element, which does not react with lithium and can be expected to serve as an adequate matrix for improving the cycleability of the electrode without high initial irreversible capacity. Studies on Sn-Ni alloys pre